abnf_alpha('Y') --> "Y".
abnf_alpha('Z') --> "Z".
-abnf_bit(0) --> "0".
-abnf_bit(1) --> "1".
+abnf_bit('0') --> "0".
+abnf_bit('1') --> "1".
-abnf_char(C) --> [C], { dif(C, '\x0000\'), char_type(C, ascii) }. %'
+abnf_char(Char) --> [Char], { dif(Char, '\x0000\'), char_type(Char, ascii) }. %'
abnf_cr --> "\r".
abnf_crlf --> "\r\n".
-abnf_ctl(C) --> [C], { char_type(C, ascii), char_type(C, control) }.
+abnf_ctl(Char) --> [Char], { char_type(Char, ascii), char_type(Char, control) }.
-abnf_digit(0) --> "0".
-abnf_digit(1) --> "1".
-abnf_digit(2) --> "2".
-abnf_digit(3) --> "3".
-abnf_digit(4) --> "4".
-abnf_digit(5) --> "5".
-abnf_digit(6) --> "6".
-abnf_digit(7) --> "7".
-abnf_digit(8) --> "8".
-abnf_digit(9) --> "9".
+abnf_digit('0') --> "0".
+abnf_digit('1') --> "1".
+abnf_digit('2') --> "2".
+abnf_digit('3') --> "3".
+abnf_digit('4') --> "4".
+abnf_digit('5') --> "5".
+abnf_digit('6') --> "6".
+abnf_digit('7') --> "7".
+abnf_digit('8') --> "8".
+abnf_digit('9') --> "9".
abnf_dquote --> "\"".
-abnf_hexdig(Digit) --> abnf_digit(Digit).
-abnf_hexdig(10) --> "A".
-abnf_hexdig(11) --> "B".
-abnf_hexdig(12) --> "C".
-abnf_hexdig(13) --> "D".
-abnf_hexdig(14) --> "E".
-abnf_hexdig(15) --> "F".
+abnf_hexdig(Char) --> abnf_digit(Char).
+abnf_hexdig('A') --> "A".
+abnf_hexdig('B') --> "B".
+abnf_hexdig('C') --> "C".
+abnf_hexdig('D') --> "D".
+abnf_hexdig('E') --> "E".
+abnf_hexdig('F') --> "F".
abnf_htab --> "\t".
abnf_lwsp --> abnf_wsp, abnf_lwsp.
abnf_lwsp --> abnf_clrf, abnf_wsp, abnf_lwsp.
-abnf_octet(C) --> [C], char_type(C, octet).
+abnf_octet(Char) --> [Char], char_type(Char, octet).
abnf_sp --> " ".
-abnf_vchar(C) --> [C], char_type(C, ascii_graphic).
+abnf_vchar(Char) --> [Char], char_type(Char, ascii_graphic).
abnf_wsp --> abnf_sp.
abnf_wsp --> abnf_htab.
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Part of Scryer Prolog.
-
+
`json_chars//1` can be used with [`phrase_from_file/2`](src/lib/pio.pl)
or [`phrase/2`](src/lib/dcgs.pl) to parse and generate [JSON](https://www.json.org/json-en.html).
:- use_module(library(dcgs)).
:- use_module(library(dif)).
:- use_module(library(lists)).
-:- use_module(library(serialization/abnf)).
/* The DCGs are written to match the McKeeman form presented on the right side of https://www.json.org/json-en.html
as closely as possible. Note that the names in the McKeeman form conflict with the pictures on the site. */
H4 is (EscapeCharCode // 16^0) mod 16
) }.
-json_hex(Hex) --> abnf_hexdig(Hex).
+json_hex(Digit) --> json_digit(Digit).
json_hex(10) --> "a".
json_hex(11) --> "b".
json_hex(12) --> "c".
json_hex(13) --> "d".
json_hex(14) --> "e".
json_hex(15) --> "f".
+json_hex(10) --> "A".
+json_hex(11) --> "B".
+json_hex(12) --> "C".
+json_hex(13) --> "D".
+json_hex(14) --> "E".
+json_hex(15) --> "F".
/* I can't think of any alternatives to using `number_chars/2` when generating, though this leads
to under-reporting of correct solutions. At least matching solutions unify when both are instantiated...
NumberChars
).
-json_integer(Digit) --> abnf_digit(Digit).
+json_integer(Digit) --> json_digit(Digit).
json_integer(TotalValue) -->
json_onenine(FirstDigit),
json_digits(RemainingValue, Power),
{ TotalValue is FirstDigit * 10 ^ (Power + 1) + RemainingValue }.
-json_digits(Digit, 0) --> abnf_digit(Digit).
+json_digits(Digit, 0) --> json_digit(Digit).
json_digits(Value, Power) -->
- abnf_digit(FirstDigit),
+ json_digit(FirstDigit),
json_digits(RemainingValue, NextPower),
{ Power is NextPower + 1,
Value is FirstDigit * 10^Power + RemainingValue }.
-json_onenine(Digit) --> abnf_digit(Digit), { dif(Digit, 0) }.
+json_digit(0) --> "0".
+json_digit(Digit) --> json_onenine(Digit).
+
+json_onenine(1) --> "1".
+json_onenine(2) --> "2".
+json_onenine(3) --> "3".
+json_onenine(4) --> "4".
+json_onenine(5) --> "5".
+json_onenine(6) --> "6".
+json_onenine(7) --> "7".
+json_onenine(8) --> "8".
+json_onenine(9) --> "9".
json_fraction(0) --> "".
json_fraction(Fraction) -->
-["JSON Test Pattern pass1",{"object with 1 member":["array with 1 element"]},{},[],-42,true,false,null,{"integer":1234567890,"real":-9876.54321,"e":0.000000000000123456789,"E":12345678900000000000000000000000000.0,"":23456789012000000000000000000000000000000000000000000000000000000000000000000,"zero":0,"one":1,"space":" ","quote":"\"","backslash":"\\","controls":"\b\f\n\r\t","slash":"\/ & \/","alpha":"abcdefghijklmnopqrstuvwyz","ALPHA":"ABCDEFGHIJKLMNOPQRSTUVWYZ","digit":"0123456789","special":"`1~!@#$%^&*()_+-={':[,]}|;.<\/>?","hex":"ģ䕧覫\u0001췯ꯍ\u001A","true":true,"false":false,"null":null,"array":[],"object":{},"address":"50 St. James Street","url":"http:\/\/www.JSON.org\/","comment":"\/\/ \/* <!-- --","# -- --> *\/":" "," s p a c e d ":[1,2,3,4,5,6,7],"compact":[1,2,3,4,5,6,7],"jsontext":"{\"object with 1 member\":[\"array with 1 element\"]}","quotes":"" \" %22 0x22 034 "","\/\\\"쫾몾ꮘﳞ볚\b\f\n\r\t`1~!@#$%^&*()_+-=[]{}|;:',.\/<>?":"A key can be any string"},0.5,98.6,99.44,1066,"rosebud"]
+["JSON Test Pattern pass1",{"object with 1 member":["array with 1 element"]},{},[],-42,true,false,null,{"integer":1234567890,"real":-9876.54321,"e":0.000000000000123456789,"E":12345678900000000000000000000000000.0,"":23456789012000000000000000000000000000000000000000000000000000000000000000000,"zero":0,"one":1,"space":" ","quote":"\"","backslash":"\\","controls":"\b\f\n\r\t","slash":"\/ & \/","alpha":"abcdefghijklmnopqrstuvwyz","ALPHA":"ABCDEFGHIJKLMNOPQRSTUVWYZ","digit":"0123456789","special":"`1~!@#$%^&*()_+-={':[,]}|;.<\/>?","hex":"ģ䕧覫\u0001췯ꯍ\u001a","true":true,"false":false,"null":null,"array":[],"object":{},"address":"50 St. James Street","url":"http:\/\/www.JSON.org\/","comment":"\/\/ \/* <!-- --","# -- --> *\/":" "," s p a c e d ":[1,2,3,4,5,6,7],"compact":[1,2,3,4,5,6,7],"jsontext":"{\"object with 1 member\":[\"array with 1 element\"]}","quotes":"" \" %22 0x22 034 "","\/\\\"쫾몾ꮘﳞ볚\b\f\n\r\t`1~!@#$%^&*()_+-=[]{}|;:',.\/<>?":"A key can be any string"},0.5,98.6,99.44,1066,"rosebud"]